Hi, I didn't stock up veggies or groceries for the Coronavirus situation. We tried to get some basic groceries and veggies this weekend. All the shops are empty and we stood for 2 to 3 hours in Costco for billing. I didn't get onion and tomato anywhere. So, dh got canned diced tomatoes from Costco. I have never used that before. It has 8 cans. How to use those? I haven't opened it yet. Can we cook that like our normal tomato? Any inputs? Thank you.